454139473 has 4 divisors (see below), whose sum is σ = 454634560. Its totient is φ = 453644388.

The previous prime is 454139459. The next prime is 454139489. The reversal of 454139473 is 374931454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 374931454 = 2 ⋅187465727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454139473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454139423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246165 + ... + 248002.

It is an arithmetic number, because the mean of its divisors is an integer number (113658640).

Almost surely, 2^454139473 is an apocalyptic number.

It is an amenable number.

454139473 is a deficient number, since it is larger than the sum of its proper divisors (495087).

454139473 is an equidigital number, since it uses as much as digits as its factorization.

454139473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495086.

The product of its digits is 181440, while the sum is 40.

The square root of 454139473 is about 21310.5483974486. The cubic root of 454139473 is about 768.6519805578.

The spelling of 454139473 in words is "four hundred fifty-four million, one hundred thirty-nine thousand, four hundred seventy-three".